the faa typically does not wait until the ntsb has finished its investigation. the ntsb p takes a long type. the normal investigation lasts well over a year and there are two months into the battery fire probe and there's been no determination of a cause. they do know the li lithium ion battery overheated and that led to overheating and a fire. they are including a redesigned battery with better insulation between the cells and a better steel containment box that engineers say won't allow for any air to fuel a fire. they've redesigned the charge erp sore the battery doesn't have to work as hard. the faa has given approval to that fix and boeing says it could have its planes back in the air with the airlines flying customers again by the end of next week. back to you, martha. martha: that's been quite a story. dan, thank you. bill: from capitol hill the tempers are flaring today. have a look at this right here. >> i say that particularly those who are pointing to what happened the terrible tragedy in boston as i would say an excuse for not doing a bill, or delayi